MC908AZ60ACFU Freescale Semiconductor, MC908AZ60ACFU Datasheet - Page 247
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MC908AZ60ACFU
Manufacturer Part Number
MC908AZ60ACFU
Description
IC MCU FLASH 8.4MHZ 60K 64QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AZ60ACFUER.pdf
(414 pages)
Specifications of MC908AZ60ACFU
Core Processor
HC08
Core Size
8-Bit
Speed
8.4MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
52
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 15x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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21.7.2 PIT Counter Registers
The two read-only PIT counter registers contain the high and low bytes of the value in the PIT counter.
Reading the high byte (PCNTH) latches the contents of the low byte (PCNTL) into a buffer. Subsequent
reads of PCNTH do not affect the latched PCNTL value until PCNTL is read. Reset clears the PIT counter
registers. Setting the PIT reset bit (PRST) also clears the PIT counter registers.
Freescale Semiconductor
Address: $004C
Address: $004D
If you read PCNTH during a break interrupt, be sure to unlatch PCNTL by
reading PCNTL before exiting the break interrupt. Otherwise, PCNTL
retains the value latched during the break.
Reset:
Reset:
Read:
Read:
Write:
Write:
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Bit 15
Bit 15
Bit 7
Bit 7
Figure 21-4. PIT Counter Registers (PCNTH–PCNTL)
0
0
PPS[2:0]
000
001
010
011
100
101
110
111
= Unimplemented
14
14
6
0
6
0
Table 21-2. Prescaler Selection
13
13
5
0
5
0
NOTE
12
12
4
0
4
0
Internal Bus Clock ÷ 16
Internal Bus Clock ÷ 32
Internal Bus Clock ÷ 64
Internal Bus Clock ÷ 64
Internal Bus Clock ÷ 2
Internal Bus Clock ÷ 4
Internal Bus Clock ÷ 8
Internal Bus Clock ÷1
PIT Clock Source
11
11
3
0
3
0
10
10
2
0
2
0
1
9
0
1
9
0
Bit 0
Bit 8
Bit 0
Bit 8
0
0
I/O Registers
247
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